level 1
右然德楠
楼主
最后的希望，:cry:
各位好，我是在做粒子燃烧，使用的压力基模型，计算步骤是在先计算流体内流动以及气体燃烧，收敛之后加入粒子，使用dpm模型，但是在设置粒子燃烧和流体耦合的时候，一直发散，经过一段时间的摸索，还是没有找到真正的解决办法。
如图设置，不过当最大步数大于2000的时候就发发散，提示如下。经过分析可能是在计算粒子的时候，迭代次数大于fluent最大次数，但是经过查文献并没有大于fluent最大步。而且粒子还有很多没有出去就计算结束了。看师兄设置的50000都没有出现这种情况。边界条件和师兄设置的一样。实在不知道怎么处理。希望了解的朋友给与帮助。
DPM Iteration ....
number tracked = 3180, escaped = 2176, aborted = 0, trapped = 0, evaporated = 431, incomplete = 573, incomplete_parallel = 0
turbulent viscosity limited to viscosity ratio of 1.000000e+05 in 5 cells
reversed flow in 233 faces on pressure-outlet 26.
n iter > n max
n iter > n max
n iter > n max
n iter > n max
n iter > n max
n iter > n max
n iter > n max
n iter > n max
n iter > n max
74260 1.0938e-03 6.2580e-06 2.3371e-06 2.8528e-06 9.0887e-06 2.1823e-05 1.5210e-04 5.1774e-06 1.0156e-05 4.9794e-05 1.1908e-05 6.2339e-05 2.0163e-05 1.5269e-05 -1.5621e-05 1.4661e+03 8.7170e+04 32862:19:53 9999981
Stabilizing x-momentum to enhance linear solver robustness.
Divergence detected in AMG solver: x-momentum Stabilizing y-momentum to enhance linear solver robustness.
Divergence detected in AMG solver: y-momentum Stabilizing z-momentum to enhance linear solver robustness.
Divergence detected in AMG solver: z-momentum Stabilizing pressure correction to enhance linear solver robustness.
Divergence detected in AMG solver: pressure correction Stabilizing k to enhance linear solver robustness.
Divergence detected in AMG solver: k Stabilizing epsilon to enhance linear solver robustness.
Divergence detected in AMG solver: epsilon Stabilizing species-0 to enhance linear solver robustness.
Divergence detected in AMG solver: species-0 Stabilizing species-1 to enhance linear solver robustness.
Divergence detected in AMG solver: species-1 Stabilizing species-2 to enhance linear solver robustness.
Divergence detected in AMG solver: species-2 Stabilizing species-3 to enhance linear solver robustness.
Divergence detected in AMG solver: species-3 Stabilizing species-4 to enhance linear solver robustness.
Divergence detected in AMG solver: species-4 Stabilizing species-5 to enhance linear solver robustness.
Divergence detected in AMG solver: species-5 Stabilizing species-6 to enhance linear solver robustness.
Divergence detected in AMG solver: species-6 Stabilizing temperature to enhance linear solver robustness.
Divergence detected in AMG solver: temperature
WARNING: Invalid cp (0.000000e+00 J/kgK) for mixture-template at temperature 1.#QNAN0 K
2018年06月11日 05点06分
1
各位好，我是在做粒子燃烧，使用的压力基模型，计算步骤是在先计算流体内流动以及气体燃烧，收敛之后加入粒子，使用dpm模型，但是在设置粒子燃烧和流体耦合的时候，一直发散，经过一段时间的摸索，还是没有找到真正的解决办法。
如图设置，不过当最大步数大于2000的时候就发发散，提示如下。经过分析可能是在计算粒子的时候，迭代次数大于fluent最大次数，但是经过查文献并没有大于fluent最大步。而且粒子还有很多没有出去就计算结束了。看师兄设置的50000都没有出现这种情况。边界条件和师兄设置的一样。实在不知道怎么处理。希望了解的朋友给与帮助。DPM Iteration ....
number tracked = 3180, escaped = 2176, aborted = 0, trapped = 0, evaporated = 431, incomplete = 573, incomplete_parallel = 0
turbulent viscosity limited to viscosity ratio of 1.000000e+05 in 5 cells
reversed flow in 233 faces on pressure-outlet 26.
n iter > n max
n iter > n max
n iter > n max
n iter > n max
n iter > n max
n iter > n max
n iter > n max
n iter > n max
n iter > n max
74260 1.0938e-03 6.2580e-06 2.3371e-06 2.8528e-06 9.0887e-06 2.1823e-05 1.5210e-04 5.1774e-06 1.0156e-05 4.9794e-05 1.1908e-05 6.2339e-05 2.0163e-05 1.5269e-05 -1.5621e-05 1.4661e+03 8.7170e+04 32862:19:53 9999981
Stabilizing x-momentum to enhance linear solver robustness.
Divergence detected in AMG solver: x-momentum Stabilizing y-momentum to enhance linear solver robustness.
Divergence detected in AMG solver: y-momentum Stabilizing z-momentum to enhance linear solver robustness.
Divergence detected in AMG solver: z-momentum Stabilizing pressure correction to enhance linear solver robustness.
Divergence detected in AMG solver: pressure correction Stabilizing k to enhance linear solver robustness.
Divergence detected in AMG solver: k Stabilizing epsilon to enhance linear solver robustness.
Divergence detected in AMG solver: epsilon Stabilizing species-0 to enhance linear solver robustness.
Divergence detected in AMG solver: species-0 Stabilizing species-1 to enhance linear solver robustness.
Divergence detected in AMG solver: species-1 Stabilizing species-2 to enhance linear solver robustness.
Divergence detected in AMG solver: species-2 Stabilizing species-3 to enhance linear solver robustness.
Divergence detected in AMG solver: species-3 Stabilizing species-4 to enhance linear solver robustness.
Divergence detected in AMG solver: species-4 Stabilizing species-5 to enhance linear solver robustness.
Divergence detected in AMG solver: species-5 Stabilizing species-6 to enhance linear solver robustness.
Divergence detected in AMG solver: species-6 Stabilizing temperature to enhance linear solver robustness.
Divergence detected in AMG solver: temperature
WARNING: Invalid cp (0.000000e+00 J/kgK) for mixture-template at temperature 1.#QNAN0 K
